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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Fits 1973-1974 Monte Carlo, Tube Size 1-3/4", Stock Headers-Painted 2551HKRThese Hooker RacingHeart headers are for Street Stock cars with Small Block Chevy engine. They fit 1973 1974 GM A Body vehicles as well as 1970 1974 GM F body vehicles. They have 1 3 4 inch primaries with 3 inch collectors, 3 8 inch thick flanges to prevent warping and have merge spears for increased velocity. These are black painted mild steel. Features: 1 3 4 inch primaries x 3 inch collectors Collectors feature merge spears for increased exhaust
These Hooker RacingHeart headers are for Street Stock cars with Small Block Chevy engine. They fit 1973-1974 GM A-Body vehicles as well as 1970-1974 GM F-body vehicles. They have 1-3/4 inch primaries with 3 inch collectors, 3/8 inch thick flanges to prevent warping and have merge spears for increased velocity. These are black painted mild steel.
Features:
- 1-3/4 inch primaries x 3 inch collectors
- Collectors feature merge spears for increased exhaust velocity
- 3/8 inch thick header flanges for strength and maximum sealing surface
- Black Painted Mild Steel
- Fits both straight and angle plug heads
- Requires short oil filter
Specs:
| Application | Street Stock |
|---|---|
| Bolt Size | 3/8-16 x 3/4 |
| Brand | Hooker RacingHeart |
| CARB (California) Compliant | No |
| Clearance Category | Exhaust |
| Collector Diameter | 3.00 inch |
| Discount Percentage | 26-50% |
| Emission Code | 4 |
| Engine | Chevrolet Small Block Gen I |
| Header Finish | Black Paint |
| Header Style | Long Tube |
| Primary Tube Dia. | 1-3/4 inch |
| Product Type | Headers |
| Race Only | Yes |
| Tube Material | Mild Steel |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1975-1983 | Pontiac | Grand Prix | LJ |
| 1970-1981 | Pontiac | Firebird | Base |
| 1978-1987 | Buick | Regal | Limited |
| 1973-1987 | Pontiac | Grand Prix | Base |
| 1970-1981 | Pontiac | Firebird | Esprit |
| 1970-1981 | Pontiac | Firebird | Formula |
| 1981-1987 | Pontiac | Grand Prix | Brougham |
| 1973-1987 | Buick | Regal | Base |
| 1974-1983 | Chevrolet | Malibu | Classic |
| 1973-1988 | Chevrolet | Monte Carlo | Base |
| 1981 | Chevrolet | Camaro | Sport |
| 1970-1981 | Pontiac | Firebird | Trans Am |
| 1980-1981 | Oldsmobile | Cutlass | Brougham |
| 1976-1981 | Chevrolet | Malibu | Classic Landau |
| 1980-1981 | Oldsmobile | Cutlass | LS |
| 1979-1981 | Chevrolet | Camaro | Berlinetta |
| 1981 | Oldsmobile | Cutlass | Supreme |
| 1973-1981 | Chevrolet | Malibu | Base |
| 1973-1981 | Chevrolet | Monte Carlo | Landau |
| 1970-1980 | Chevrolet | Camaro | Base |
| 1977-1980 | Chevrolet | Malibu | Classic Sport |
| 1976-1980 | Chevrolet | Camaro | Rally Sport |
| 1973-1980 | Chevrolet | Malibu | Estate |
| 1978-1980 | Chevrolet | Monte Carlo | Sport |
| 1975-1980 | Chevrolet | Malibu | Classic Estate |
| 1977-1980 | Chevrolet | Malibu | Sport |
| 1979 | Chevrolet | Malibu | Police |
| 1976-1979 | Chevrolet | Malibu | Landau |
| 1986-1988 | Chevrolet | Monte Carlo | LS |
| 1983-1988 | Chevrolet | Monte Carlo | SS |
| 1985-1987 | Oldsmobile | Cutlass | Salon |
| 1984-1987 | Pontiac | Grand Prix | LE |
| 1982-1983 | Buick | Regal | Estate Wagon |
| 1983 | Chevrolet | Monte Carlo | CL |
| 1970-1981 | Chevrolet | Camaro | Z28 |
| 1975-1980 | Pontiac | Grand Prix | SJ |
| 1973-1980 | Oldsmobile | Cutlass | Base |
| 1976-1979 | Oldsmobile | Cutlass | Vista Cruiser |
| 1979 | Oldsmobile | Cutlass | Vista Cruiser Brougham |
| 1973-1978 | Chevrolet | Camaro | LT |
| 1976-1978 | Chevrolet | Camaro | LT Rally Sport |
| 1976-1977 | Buick | Regal | SR |
| 1973-1977 | Chevrolet | Monte Carlo | S |
| 1970-1975 | Chevrolet | Camaro | RS |
| 1981 | Buick | Regal | Sport |
| 1975-1977 | Oldsmobile | Cutlass | 442 |
| 1977 | Oldsmobile | Cutlass | Colonnade |
| 1976-1977 | Oldsmobile | Cutlass | Colonnade S |
| 1973-1977 | Oldsmobile | Cutlass | S |
| 1970-1972 | Chevrolet | Camaro | SS |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 51 reviews
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Product Reviews
★★★★★ 5
Comfortable and cool. Does not ride up.
Color: 01-multicolour (4-pack), Size: Medium
Extremely comfortable. Stays cool. Ample coverage. Quality material. They do not creep up. I ordered a medium which I generally take a size small. I have reordered and will reorder again to add more colors to my collection.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Great Value for Cool Thigh Protection
Color: 02-multicolour (4-pack), Size: XX-Large
For the price, I'm not sure there are better women's boxer shortlettes anywhere. I've tried more expensive brands, and for quality and cooling, these are right up there. I have other bamboo viscose undies that still get gross when I get sweaty in the summer, but these, with the large mesh panel, really help wick away a lot of that moisture, keeping you feeling dryer and cooler. I find that the leg openings are comfortable and don't roll up! and the waist band doesn't dig, nor does it roll down. These do not provide any compression, and I wasn't looking for any. I just wanted some cooling, thigh protecting women's boxers that wouldn't break the bank. These are them! Bonus- I've washed them and put them in the dryer (following their instructions), and they haven't shrunk; they look about the same and are nice and soft.
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Reviewed in the United States on July 28, 2025
★★★★★ 4
Great for the entire family but expensive
So far so good. The brand of boxers we had been buying changed their style and construction so we needed to find an alternative. These have held up well so far to multiple weeks of frequent washing and wearing from the entire family. We did size up from the usual 6/M we normally buy and ordered large to prevent the legs from rolling up which worked out great. Our daughter likes the length and how soft the fabric is for wearing under skirts and gym shorts and liners stay put without moving or leaking as another reviewer mentioned. Our son says they are comfortable and fit well being just supportive enough without being constrictive. We all agree that there seems to be not enough fabric in the back as they tend to be much tighter across the backside than the front and that also causes the waist band to ride lower in the back than the front. These have better seam placement than some brands we tried with no seam across the lady bits and no seam down the middle of the back side so they are more much comfortable but the cost is also much higher and that is why we're only giving it 4 stars. These will stay in the rotation until we find something cheaper that both us and the kids like.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Pregnant lady review! Soft, comfortable, cool.
Color: 03-multicolour (4-pack), Size: Large
So soft, comfortable and cool. I'm pregnant and I've gained weight in my legs. I love wearing dresses but my thighs were rubbing together too much. These are perfect to wear under dresses. I also wear them under my bibs at work and it keeps me from getting overheated but I don't have to worry about whether or not my underwear show since they just look like shorts. I wish these came in maternity. I just keep them below my belly. I'll be buying more for sure.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
I want to live in these
Color: 01-multicolour (4-pack), Size: Medium
I bought 4 different sets of new underwear. Unfortunately these came last. It’s unfortunate, because if they had come first I would have cancelled all my other orders or returned them and ordered more of these. I never want to wear anything else ever again; these are the comfiest undies I’ve ever owned, I want to live in them. I can wear them under pretty much anything except leggings or very tight pants (but let’s be honest, I don’t wear those anyway.)
They are incredibly soft and breathable, they wash well, don’t roll, keep my thighs from rubbing, are comfy to sleep in, and the colors were true to the photo.
Just a heads up, they are on the thin side and just a bit see through in the rear.
I’m 5’5” 140lbs and the mediums fit perfectly, they go about mid-thigh.
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Reviewed in the United States on July 30, 2025
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